Convert sasl check to use LIBVIRT_CHECK_LIB_ALT

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

m4/virt-sasl.m4

@@ -0,0 +1,29 @@
+dnl The libsasl2.so or libsasl.so library
+dnl
+dnl Copyright (C) 2012-2013 Red Hat, Inc.
+dnl
+dnl This library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public
+dnl License as published by the Free Software Foundation; either
+dnl version 2.1 of the License, or (at your option) any later version.
+dnl
+dnl This library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public
+dnl License along with this library.  If not, see
+dnl <http://www.gnu.org/licenses/>.
+dnl
+
+AC_DEFUN([LIBVIRT_CHECK_SASL],[
+  LIBVIRT_CHECK_LIB_ALT([SASL], [sasl2],
+                        [sasl_client_init], [sasl/sasl.h],
+                        [SASL1], [sasl],
+                        [sasl_client_init], [sasl/sasl.h])
+])
+
+AC_DEFUN([LIBVIRT_RESULT_SASL],[
+  LIBVIRT_RESULT_LIB([SASL])
+])